Two-volt battery pentode for high-frequency amplification, detection, and converter service in portable radio receivers. Its low-power filament suits battery operation, while high plate resistance provides useful gain in RF, detector, or superheterodyne frequency-changing circuits.
Directly heated Soviet multi-control pentode for RF amplification, oscillation, and frequency conversion. Two control grids permit mixer and oscillator functions in addition to ordinary amplification in compact battery equipment.
Dual-control sharp-cutoff pentode for specialized television circuits including FM detection, delay, gain control, and mixing. Independently effective control grids provide greater functional versatility than an ordinary amplifier pentode.
Dual-control sharp-cutoff pentode developed primarily as an FM detector in color and monochrome television receivers. Both control grids influence plate current independently, enabling specialized detector and control functions.
Dual-control sharp-cutoff pentode for FM detection, delay, gain-control, and mixer service in television receivers. Its independently effective control grids enable specialized television sound-detector and signal-processing functions.
Dual-control sharp-cutoff miniature pentode used primarily as an FM detector in color and black-and-white television receivers. Its independently effective control grids provide the specialized detector and control characteristics required in television sound circuitry.
Premium subminiature dual-control pentode for mixer, gated-amplifier, and specialized control applications in severe military and industrial environments. Independent control electrodes permit frequency conversion, gating, and gain-control functions beyond ordinary pentode amplification.
Ruggedized dual-control variable-mu pentode for mixer, controlled-amplifier, and specialized RF circuits. Independent control grids permit frequency conversion, gating, and gain-control functions, while extensive heater-cycling capability reflects demanding military and industrial service.
Dual-control sharp-cutoff pentode for gated-amplifier and mixer service to approximately 400 MHz. Separate control grids provide switching and frequency-conversion functions, while its heater rating suits specialized aircraft and military electrical systems.
Dual-control sharp-cutoff pentode developed primarily for FM sound-detector service and specialized television circuits. Separate control grids independently influence plate current, enabling detector, gating, mixing, and control functions beyond conventional pentode amplification.
High-transconductance dual-control pentode designed as an FM sound detector in color and black-and-white television receivers. Its two independent control grids provide specialized detector and amplifier action with considerably greater signal capability than earlier detector pentodes.
Specialized receiving tube retained in the RadioDetectorConverter population; available source metadata was insufficient in this pass to support a narrower functional reassignment without speculation.
Remote-cutoff high-frequency pentode for RF amplification or first-detector service. Its broad cutoff characteristic supports automatic volume control while high plate resistance provides useful receiver front-end gain.
Dual-control sharp-cutoff pentode for color-television demodulation, gating, and controlled-amplifier circuits. Two effective control grids enable switching and signal processing beyond ordinary pentode amplification.
Dual-control sharp-cutoff pentode developed primarily for television FM detection. Two effective control grids also permit delay, gain-control, and mixer circuits, providing specialized signal-processing flexibility.
Improved dual-control sharp-cutoff pentode designed primarily as an FM detector in color and monochrome television receivers. Both control grids independently influence plate current for specialized detector and control functions.
Dual-control miniature pentode designed for FM sound-detector service in color and monochrome television receivers. Two independent control grids provide separate influence over plate current for specialized detection.
Russian dual-control high-frequency pentode for RF amplification and frequency conversion. The additional control electrode enables mixer and converter functions beyond ordinary pentode voltage amplification.
Ruggedized long-life Russian dual-control high-frequency pentode for RF amplification and frequency conversion. Dual-control construction permits mixer and converter operation in demanding professional equipment.
Russian wideband high-frequency pentode for RF voltage amplification and frequency conversion. High transconductance and long rated service life suit professional broadband amplifier and converter applications.
Extended-reliability Russian wideband pentode for RF voltage amplification and frequency conversion. High transconductance, long guaranteed service life, and ruggedized construction suit professional high-frequency equipment.
Russian dual-control subminiature pentode for RF amplification, frequency conversion, and pulse-forming circuits. Its additional control electrode enables mixing, gating, and pulse functions beyond ordinary amplification.
High-reliability Russian dual-control subminiature pentode for RF amplification, frequency conversion, and pulse-forming service. Compact low-capacitance construction supports mixer, gating, and pulse functions in demanding equipment.
7 pins - UX7 - Small 7-contact (0.75-inch pin circle)
Classic sharp-cutoff three-grid pentode for RF voltage amplification and detector service in radio receivers. High plate resistance provides strong voltage gain, while the accessible suppressor grid permits specialized detector and control circuits.
7 pins - UX7 - Small 7-contact (0.75-inch pin circle)
Glass-envelope sharp-cutoff pentode for detector, RF, and general voltage-amplifier service. High plate resistance provides substantial voltage gain, while manufacturer data also support triode-connected operation.
GT-envelope sharp-cutoff pentode for detector and high-gain voltage-amplifier service. High plate resistance and modest transconductance provide substantial receiver gain, with manufacturer data also supporting triode connection.
Sharp-cutoff single-ended pentode for high-gain RF or audio voltage amplification. Manufacturer documentation also identifies detector, oscillator, and mixer service, making it unusually versatile among fixed-gain pentodes.
Classic sharp-cutoff pentode explicitly designed for radio RF amplification and detector service. Its high plate resistance provides substantial gain while manufacturer literature supports detector operation as a primary receiver function.
Subminiature strap-frame-grid sharp-cutoff pentode for VHF RF/IF amplification and mixer service. High transconductance and severe-environment construction suit demanding military and professional high-frequency equipment.
Premium subminiature dual-control pentode for amplifier and mixer service in severe-environment equipment. An additional control electrode enables frequency conversion and signal-control functions beyond ordinary pentode amplification.
Sharp-cutoff micro-metal miniature dual-control pentode for Class A amplification and mixer service. Its third grid functions as a second control electrode for frequency conversion and signal-control applications.
Mazda high-slope screened pentode for AC mains receivers. Manufacturer documentation supports frequency-changer, detector, and amplifier service, giving it broader functionality than a conventional RF pentode.
All-current high-frequency pentode for RF, IF, audio-frequency amplification, and detector service. High plate resistance provides useful gain across several receiver functions in universal and series-heater equipment.
Subminiature pentode for mixer and gated-amplifier service. Specialized control behavior supports frequency conversion and gating rather than ordinary fixed-gain amplification alone.
Special-quality reliable-cathode CK5784 variant for mixer and gated-amplifier service. It emphasizes dependable operation in professional frequency-conversion, gating, and pulse-related circuitry.
Reliable Raytheon miniature pentode for mixer and gated-amplifier service. Specialized control behavior supports frequency conversion and gating while modest heater demand suits professional signal-processing equipment.
Versatile Philips pentode for RF, IF, audio-frequency, oscillator, frequency-converter, and detector service. Its unusually broad documented application range allows it to perform most major small-signal functions in a radio receiver.
Versatile Philips pentode explicitly usable for RF/IF amplification, biased radio detection, and AF amplification. Its documented detector role keeps it within the radio detector family despite its broader amplifier capability.
High-frequency pentode for radio detector, RF and IF amplifier, and automatic-volume-control service in universal receivers. Detection is an explicit primary manufacturer application alongside receiver amplification.
Telefunken RF and IF pentode also designed for detector or anode-rectifier service. Depending on circuit configuration, it can provide high-frequency signal amplification or demodulation in early mains-powered receivers.
Mullard straight high-frequency pentode for RF amplification, detector service, and low-frequency voltage amplification. Its broad application range allows several receiver functions from one series-heater tube type.
Mullard straight high-frequency pentode for RF amplification, detector service, and low-frequency amplification. High transconductance and exceptionally high plate resistance provide substantial gain across several receiver signal-processing roles.
Directly heated screen-grid high-frequency pentode for battery receivers, usable as either an RF amplifier or detector. Its low-voltage filament provides useful receiver gain while preserving reasonable battery economy.
Directly heated screened high-frequency pentode for battery receivers, with documented use as both an RF amplifier and detector. Its economical filament and useful transconductance support portable receiver signal processing.
Indirectly heated high-frequency pentode for RF amplification or speech detection in AC mains receivers. Its ability to serve as either amplifier or detector provides useful flexibility in early transformer-powered radios.
High-transconductance screened pentode developed primarily for television RF and IF stages, with additional video-output and frequency-changer applications. Its broad television roles make it more versatile than a conventional RF-only pentode.
Straight high-frequency pentode for RF amplification, detector service, or low-frequency amplification in AC/DC receivers and car radios. Its broad application range allows several receiver functions from one series-heater tube.
High-frequency pentode for 100 mA series-heater AC/DC receivers, particularly RF amplification and mixer service in FM equipment. High transconductance provides strong gain and useful frequency-conversion performance.
Two-volt high-frequency pentode explicitly specified for radio detector, LF-amplifier, oscillator, and HF-amplifier service. Its detector role is sufficiently central to retain the radio detector/converter umbrella.
Two-volt battery pentode for high-frequency amplification, detection, and converter service in portable radio receivers. Its low-power filament suits battery operation, while high plate resistance provides useful gain in RF, detector, or superheterodyne frequency-changing circuits.
Directly heated Soviet multi-control pentode for RF amplification, oscillation, and frequency conversion. Two control grids permit mixer and oscillator functions in addition to ordinary amplification in compact battery equipment.
Dual-control sharp-cutoff pentode for specialized television circuits including FM detection, delay, gain control, and mixing. Independently effective control grids provide greater functional versatility than an ordinary amplifier pentode.
Dual-control sharp-cutoff pentode developed primarily as an FM detector in color and monochrome television receivers. Both control grids influence plate current independently, enabling specialized detector and control functions.
Dual-control sharp-cutoff pentode for FM detection, delay, gain-control, and mixer service in television receivers. Its independently effective control grids enable specialized television sound-detector and signal-processing functions.
Dual-control sharp-cutoff miniature pentode used primarily as an FM detector in color and black-and-white television receivers. Its independently effective control grids provide the specialized detector and control characteristics required in television sound circuitry.
Premium subminiature dual-control pentode for mixer, gated-amplifier, and specialized control applications in severe military and industrial environments. Independent control electrodes permit frequency conversion, gating, and gain-control functions beyond ordinary pentode amplification.
Ruggedized dual-control variable-mu pentode for mixer, controlled-amplifier, and specialized RF circuits. Independent control grids permit frequency conversion, gating, and gain-control functions, while extensive heater-cycling capability reflects demanding military and industrial service.
Dual-control sharp-cutoff pentode for gated-amplifier and mixer service to approximately 400 MHz. Separate control grids provide switching and frequency-conversion functions, while its heater rating suits specialized aircraft and military electrical systems.
Dual-control sharp-cutoff pentode developed primarily for FM sound-detector service and specialized television circuits. Separate control grids independently influence plate current, enabling detector, gating, mixing, and control functions beyond conventional pentode amplification.
High-transconductance dual-control pentode designed as an FM sound detector in color and black-and-white television receivers. Its two independent control grids provide specialized detector and amplifier action with considerably greater signal capability than earlier detector pentodes.
Specialized receiving tube retained in the RadioDetectorConverter population; available source metadata was insufficient in this pass to support a narrower functional reassignment without speculation.
Remote-cutoff high-frequency pentode for RF amplification or first-detector service. Its broad cutoff characteristic supports automatic volume control while high plate resistance provides useful receiver front-end gain.
Dual-control sharp-cutoff pentode for color-television demodulation, gating, and controlled-amplifier circuits. Two effective control grids enable switching and signal processing beyond ordinary pentode amplification.
Dual-control sharp-cutoff pentode developed primarily for television FM detection. Two effective control grids also permit delay, gain-control, and mixer circuits, providing specialized signal-processing flexibility.
Improved dual-control sharp-cutoff pentode designed primarily as an FM detector in color and monochrome television receivers. Both control grids independently influence plate current for specialized detector and control functions.
Dual-control miniature pentode designed for FM sound-detector service in color and monochrome television receivers. Two independent control grids provide separate influence over plate current for specialized detection.
Russian dual-control high-frequency pentode for RF amplification and frequency conversion. The additional control electrode enables mixer and converter functions beyond ordinary pentode voltage amplification.
Ruggedized long-life Russian dual-control high-frequency pentode for RF amplification and frequency conversion. Dual-control construction permits mixer and converter operation in demanding professional equipment.
Russian wideband high-frequency pentode for RF voltage amplification and frequency conversion. High transconductance and long rated service life suit professional broadband amplifier and converter applications.
Extended-reliability Russian wideband pentode for RF voltage amplification and frequency conversion. High transconductance, long guaranteed service life, and ruggedized construction suit professional high-frequency equipment.
Russian dual-control subminiature pentode for RF amplification, frequency conversion, and pulse-forming circuits. Its additional control electrode enables mixing, gating, and pulse functions beyond ordinary amplification.
High-reliability Russian dual-control subminiature pentode for RF amplification, frequency conversion, and pulse-forming service. Compact low-capacitance construction supports mixer, gating, and pulse functions in demanding equipment.
7 pins - UX7 - Small 7-contact (0.75-inch pin circle)
Classic sharp-cutoff three-grid pentode for RF voltage amplification and detector service in radio receivers. High plate resistance provides strong voltage gain, while the accessible suppressor grid permits specialized detector and control circuits.
7 pins - UX7 - Small 7-contact (0.75-inch pin circle)
Glass-envelope sharp-cutoff pentode for detector, RF, and general voltage-amplifier service. High plate resistance provides substantial voltage gain, while manufacturer data also support triode-connected operation.
GT-envelope sharp-cutoff pentode for detector and high-gain voltage-amplifier service. High plate resistance and modest transconductance provide substantial receiver gain, with manufacturer data also supporting triode connection.
Sharp-cutoff single-ended pentode for high-gain RF or audio voltage amplification. Manufacturer documentation also identifies detector, oscillator, and mixer service, making it unusually versatile among fixed-gain pentodes.
Classic sharp-cutoff pentode explicitly designed for radio RF amplification and detector service. Its high plate resistance provides substantial gain while manufacturer literature supports detector operation as a primary receiver function.
Subminiature strap-frame-grid sharp-cutoff pentode for VHF RF/IF amplification and mixer service. High transconductance and severe-environment construction suit demanding military and professional high-frequency equipment.
Premium subminiature dual-control pentode for amplifier and mixer service in severe-environment equipment. An additional control electrode enables frequency conversion and signal-control functions beyond ordinary pentode amplification.
Sharp-cutoff micro-metal miniature dual-control pentode for Class A amplification and mixer service. Its third grid functions as a second control electrode for frequency conversion and signal-control applications.
Mazda high-slope screened pentode for AC mains receivers. Manufacturer documentation supports frequency-changer, detector, and amplifier service, giving it broader functionality than a conventional RF pentode.
All-current high-frequency pentode for RF, IF, audio-frequency amplification, and detector service. High plate resistance provides useful gain across several receiver functions in universal and series-heater equipment.
Subminiature pentode for mixer and gated-amplifier service. Specialized control behavior supports frequency conversion and gating rather than ordinary fixed-gain amplification alone.
Special-quality reliable-cathode CK5784 variant for mixer and gated-amplifier service. It emphasizes dependable operation in professional frequency-conversion, gating, and pulse-related circuitry.
Reliable Raytheon miniature pentode for mixer and gated-amplifier service. Specialized control behavior supports frequency conversion and gating while modest heater demand suits professional signal-processing equipment.
Versatile Philips pentode for RF, IF, audio-frequency, oscillator, frequency-converter, and detector service. Its unusually broad documented application range allows it to perform most major small-signal functions in a radio receiver.
Versatile Philips pentode explicitly usable for RF/IF amplification, biased radio detection, and AF amplification. Its documented detector role keeps it within the radio detector family despite its broader amplifier capability.
High-frequency pentode for radio detector, RF and IF amplifier, and automatic-volume-control service in universal receivers. Detection is an explicit primary manufacturer application alongside receiver amplification.
Telefunken RF and IF pentode also designed for detector or anode-rectifier service. Depending on circuit configuration, it can provide high-frequency signal amplification or demodulation in early mains-powered receivers.
Mullard straight high-frequency pentode for RF amplification, detector service, and low-frequency voltage amplification. Its broad application range allows several receiver functions from one series-heater tube type.
Mullard straight high-frequency pentode for RF amplification, detector service, and low-frequency amplification. High transconductance and exceptionally high plate resistance provide substantial gain across several receiver signal-processing roles.
Directly heated screen-grid high-frequency pentode for battery receivers, usable as either an RF amplifier or detector. Its low-voltage filament provides useful receiver gain while preserving reasonable battery economy.
Directly heated screened high-frequency pentode for battery receivers, with documented use as both an RF amplifier and detector. Its economical filament and useful transconductance support portable receiver signal processing.
Indirectly heated high-frequency pentode for RF amplification or speech detection in AC mains receivers. Its ability to serve as either amplifier or detector provides useful flexibility in early transformer-powered radios.
High-transconductance screened pentode developed primarily for television RF and IF stages, with additional video-output and frequency-changer applications. Its broad television roles make it more versatile than a conventional RF-only pentode.
Straight high-frequency pentode for RF amplification, detector service, or low-frequency amplification in AC/DC receivers and car radios. Its broad application range allows several receiver functions from one series-heater tube.
High-frequency pentode for 100 mA series-heater AC/DC receivers, particularly RF amplification and mixer service in FM equipment. High transconductance provides strong gain and useful frequency-conversion performance.
Two-volt high-frequency pentode explicitly specified for radio detector, LF-amplifier, oscillator, and HF-amplifier service. Its detector role is sufficiently central to retain the radio detector/converter umbrella.
